Package org.hibernate.loader.ast.internal

Class EntityBatchLoaderInPredicate<T>

java.lang.Object

org.hibernate.loader.ast.internal.SingleIdEntityLoaderSupport<T>

org.hibernate.loader.ast.internal.AbstractEntityBatchLoader<T>

org.hibernate.loader.ast.internal.EntityBatchLoaderInPredicate<T>

All Implemented Interfaces:

Preparable, BatchLoader, EntityBatchLoader<T>, EntityLoader, Loader, MultiKeyLoader, SingleEntityLoader<T>, SingleIdEntityLoader<T>, SqlInPredicateMultiKeyLoader

public class EntityBatchLoaderInPredicate<T>
extends AbstractEntityBatchLoader<T>
implements SqlInPredicateMultiKeyLoader, Preparable

An EntityBatchLoader using one or more SQL queries, which each initialize up to getSqlBatchSize() entities using a SQL IN predicate restriction - e.g., ... where id in (?,?,...).

The number of parameters rendered into the SQL is controlled by getSqlBatchSize(). Any unused parameter slots for a particular execution are set to null.

Field Summary

Fields inherited from class org.hibernate.loader.ast.internal.AbstractEntityBatchLoader

singleIdLoader

Fields inherited from class org.hibernate.loader.ast.internal.SingleIdEntityLoaderSupport

sessionFactory

Constructor Summary

Constructors

Constructor	Description
EntityBatchLoaderInPredicate(int domainBatchSize, int sqlBatchSize, EntityMappingType entityDescriptor, SessionFactoryImplementor sessionFactory)

Method Summary

Modifier and Type	Method	Description
int	getDomainBatchSize()	The total number of loadable references that can be initialized per each load operation.
int	getSqlBatchSize()
protected void	initializeEntities(Object[] idsToInitialize, Object pkValue, Object entityInstance, LockOptions lockOptions, Boolean readOnly, SharedSessionContractImplementor session)
T	load(Object pkValue, Object entityInstance, LockOptions lockOptions, Boolean readOnly, SharedSessionContractImplementor session)
T	load(Object pkValue, LockOptions lockOptions, Boolean readOnly, SharedSessionContractImplementor session)	Load by primary key value
void	prepare()	Perform the preparation
protected Object[]	resolveIdsToLoad(Object pkValue, SharedSessionContractImplementor session)
String	toString()

Methods inherited from class org.hibernate.loader.ast.internal.AbstractEntityBatchLoader

load

Methods inherited from class org.hibernate.loader.ast.internal.SingleIdEntityLoaderSupport

getLoadable, loadDatabaseSnapshot

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.hibernate.loader.ast.spi.SingleEntityLoader

getLoadable

Methods inherited from interface org.hibernate.loader.ast.spi.SingleIdEntityLoader

loadDatabaseSnapshot

Constructor Detail

EntityBatchLoaderInPredicate

public EntityBatchLoaderInPredicate(int domainBatchSize,
                                    int sqlBatchSize,
                                    EntityMappingType entityDescriptor,
                                    SessionFactoryImplementor sessionFactory)

Parameters:

domainBatchSize - The maximum number of entities we will initialize for each load

sqlBatchSize - The number of keys our SQL AST should be able to fetch

Method Detail

getDomainBatchSize

public int getDomainBatchSize()

Description copied from interface: BatchLoader

The total number of loadable references that can be initialized per each load operation.

Specified by:

getDomainBatchSize in interface BatchLoader

getSqlBatchSize

public int getSqlBatchSize()

load

public final T load(Object pkValue,
                    LockOptions lockOptions,
                    Boolean readOnly,
                    SharedSessionContractImplementor session)

Description copied from interface: SingleIdEntityLoader

Load by primary key value

Specified by:

load in interface SingleEntityLoader<T>

Specified by:

load in interface SingleIdEntityLoader<T>

load

public final T load(Object pkValue,
                    Object entityInstance,
                    LockOptions lockOptions,
                    Boolean readOnly,
                    SharedSessionContractImplementor session)

Specified by:

load in interface SingleIdEntityLoader<T>

resolveIdsToLoad

protected Object[] resolveIdsToLoad(Object pkValue,
                                    SharedSessionContractImplementor session)

initializeEntities

protected void initializeEntities(Object[] idsToInitialize,
                                  Object pkValue,
                                  Object entityInstance,
                                  LockOptions lockOptions,
                                  Boolean readOnly,
                                  SharedSessionContractImplementor session)

prepare

public void prepare()

Description copied from interface: Preparable

Perform the preparation

Specified by:

prepare in interface Preparable

toString

public String toString()

Overrides:

toString in class Object